.PHONY:all
all:test kill_demo sign_demo
kill_demo:kill_demo.cpp
	g++ -o $@ $^ -std=c++11
sign_demo:sign_demo.cpp
	g++ -o $@ $^ -std=c++11
test:test.cpp
	g++ -o $@ $^ -std=c++11
.PHONY:clean
clean:
	rm test